can you help me with math please.

Question

West of a city, a certain eastbound route is straight and makes a steep descent toward the city. The highway has a 9% grade, which means that its slope is  − 9/100. Driving on this road, you notice from elevation signs that you have descended a distance of 1000 ft. What is the change in your horizontal distance in miles? (Round your answer to two decimal places.)

Answer 1

Slope = (change in y)/(change in x)

• slope = -0.09
• change in y (vertical) = -1000 feet
• change in x (horizontal) = ?

 

-0.09 = (-1000)/(change in x)

 

Solve for the change in x.